Raymarine Wind Transmitter Bearing Service Kit, For T120 Wireless Wind Transmitter, 3 Wind Cups

Overview

The Raymarine TA122 is a wind transmitter bearing service kit for current T120 Wireless Wind Transmitters, including units manufactured during and after May 2008. It is used at the masthead wind sensor to replace the bearing assembly and the three wind cups, the parts most exposed to motion, weather, salt, and UV on a sailing boat.

This is a fit-specific service part rather than an electrical accessory. It does not add 12V or 24V wiring, fusing, or network hardware; it supports the wireless wind transmitter sensor head that supplies apparent wind speed and direction data to compatible Raymarine wireless instrument systems.

Key features

• Service kit for the current Raymarine T120 Wireless Wind Transmitter, with compatibility limited to transmitters manufactured during and after May 2008.
• Includes a replacement bearing assembly and three wind cups for the masthead wind sensor.
• Helps address wear or damage in the rotating wind-cup assembly without replacing the full wind transmitter.
• Maintenance-focused part for a wireless masthead sensor, so there is no boat-voltage selection or network cabling to match for the kit itself.
• Practical for sailboats that rely on wind data for sail trim, cockpit instruments, and wind-aware navigation decisions.

Compatibility and fit

Check the wind transmitter generation before ordering. This kit is for current T120 Wireless Wind Transmitters made during and after May 2008. Earlier T120 units use a different service requirement, so the production period matters more than the vessel size, display model, or battery voltage.

Installation and use on board

The service point is at the masthead, where the wind cups and bearing assembly are exposed to continuous movement and weather. Plan the work for a safe mast access window, and handle the sensor carefully so the wind direction vane, transmitter body, and mounting area are not strained during service.

For cruising and racing sailboats, this kit makes sense when the wind cups are damaged or when the rotating assembly shows signs of wear. Keeping the masthead sensor mechanically sound helps the rest of the instrument system receive wind information from a sensor that can turn as intended.

What’s included

• Replacement bearing assembly
• Three wind cups